Researchers report a sharp drop in salinity in the North Atlantic Ocean over the last decade, providing the most detailed look yet at changing ocean conditions in the region.

The World Health Organization projects that from 2030 to 2050, climate change impacts will cause 250,000 more deaths globally each year, mainly from malnutrition, malaria, diarrhea, and heat stress.

Robin Bell, a Columbia polar scientist, is proof of the importance of encouraging young women to study STEM disciplines. Her breakthrough research, fueled by passionate intellectual curiosity, has been critical to understanding our planet.

A new project led by Richard Plunz and his colleagues at the Earth Institute’s Urban Design Lab combines mapping techniques with Twitter-usage data to gain a real-time understanding of how people occupy public space.

If coral reefs continue to degrade, waves on coastlines may substantially increase, leading to greater coastal erosion, found a study co-authored by Alessio Rovere, an adjunct scientist at Columbia University's Lamont-Doherty Earth Observatory.